Fastener for meeting-rails of sashes



(ModeL) v w. MQARTHUR.

I'ASTENER FOR MEETING RAILS OF SASHES. No. 248,942. Patented Nov. 1,1881.

' .NITE

STATES PATENT QFFICE.

WARREN MOARTHUR, OF DUBUQUE, IOWA.

SPECIFICATION forming part of Letters Patent No. 248,942, dated November 1, 1881.

Application filed July 12, 1881.

To all whom it may concern:

Be it known that I, WARREN MoARTHUR, of Dubuque, county of Dubuque, and State of Iowa, have invented certain new and useful Improvements in Sash-Fasteners, of which the following is a specification.

My invention relates to improvements in fasteners for the meeting rails of windowsashes, and is detailed in the following description and in the accompanying drawings,wherem- Figure l is a top viewof my improved fastener. Fig. 2 is a section thereof on the line a0 00. Fig. 3 is a side view thereof; and Fig. 4 is also a side view, with the supporting-upright brolien away and with the lever in the vertical position.

In said drawings, A represents the plate for securing the device to the upper sash, and A that to be secured to the lower sash. Upon the plateAare side upright projections, a, in which are supported the pivots b and b, whereon .the two parts B and B of the lever respectively swing. Upon the other plate, A, are two upright ears, a, between which the lever lies when down. As shown, the lever is a compound one, composed of an upper and a lower part, each independently pivoted upon pivots eccentrically located relative to each other. Of these the lower one is preferablyrnade to inclose that portion of the upper one lying over thejunction of the rails, so that the latter cannot be raised by instruments inserted between the rails. It is also provided with a shoulder, N, at its forward upper end. Theupper leverha-s a correspondingshoulder, 11 at its forward end, which, when any lifting force is applied to the under one, engages with the shoulder b and prevents the raising of the said lower part, owing to the fact that the two parts of the lever swing upon different centers. In this manner I lock the sash together. WVhen it is desired to unlock the sash the upper half of the lever is first lifted until the shoulders I) and b are disengaged, and then the under half can be raised also. Preferably the upper lever is extended forward of the under one, so as to give a grasp, 0, whereby the lifting may be done, and the under one is held to the upper one by a loop or eye, a, so as to be raised with (Model.)

it, there being room in such eye to permit the locking-shoulders to clear each other before the lifting force is transmitted to the lower lever.

An additional feature of improvement lies in the method of preventing the lever from aecidentally falling back into its locked position after it has been raised. This I accomplish by elongating the opening (1 in the upper lever, through whichits pivot passes, so that when lifted to the upright position it falls down, shifting the pivot to the other end of the slot 01. In this position it is prevented from tipping inward by the back-stop (1, against which the lower end of the lever would bear inany such movement. By raising the part B so that the pivot resumes its first position in the slot d the lever may be lowered. The locking, being accomplished by the automatic gravitating action of the upper lever in both positions, is rendered sure and speedy. The ears a are beveled, as shown, and such beveled edges engage with lateral projections a on the lever B to draw the sash together.

Instead of the shoulders b l), a recess upon one part and a tooth upon the other, or other equivalent catching devices, may be used. It will also be understood that equivalent means for raising the levers together may be substituted for the loop 0.

The parts upon the plate A may be used without those upon plate A with practical re sults. So,also,the features which look the lever in the vertical position may be dispensed with.

Iprefer to make the projections a and step d so that they unitedly form a housing for the ends of the levers; but such construction is not essential.

I claim- 1. The sash-fastener consisting of the twopart lever, whereof the parts are located one above the other, swing on different centers, and are provided with locking catches, the lower part being also made to inclose the upper part at thejunction of the sash-rails, substantially as and for the purpose set forth.

2. The combination, in a sash-fastener, of a two-part lever, one part of which drops upon its pivot when raised, and a back projection or stop, d, whereby the lever is prevented from and having side projections, a, upon its under part, B, and the plate A, adapted to be secured to the other sash-rail, and provided with bevel-ears a, all constructed and arranged as set forth.

WARREN MGARTHUR.

Witnesses H. M. MUNDAY, T. E. BROWN. 

